Information transmission system for use by e.g. air balloon, has optical interface with conversion device converting radio frequency signals into optical signals transmitted by optical fibers, to reception assembly disposed in ground

摘要

#CMT# #/CMT# The system has a network of signal sensors formed of elementary antennae and an antenna matrix, and connected to a shaping assembly with filters filtering a useful band of a signal from the antenna and rejecting parasite signals, and amplifiers amplifying the signal. An optical interface has an optical conversion device converting radio frequency (RF) signals into optical signals. The signals are transmitted, via the interface`s output by optical fibers, to a reception assembly disposed in the ground. The signals received by the assembly are transmitted to the conversion device. #CMT#USE : #/CMT# Used for transmitting the information from a reception system of an aircraft e.g. air balloon, towards a processing device (claimed) disposed in the ground, where the aircraft is movable with respect to the ground. #CMT#ADVANTAGE : #/CMT# The system allows to dispose the reception assembly in the ground, thus reducing the load of the aircraft such as air balloon, in a better manner. The shaping assembly is constituted of the filters and amplifiers, thus improving the noise factor and providing a high linearity. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a balloon comprising a set of reception antennae and an optic converter. `(Drawing contains non-English language text)`.